Methods and systems for data backup and recovery on power failure
A method for storing encrypted data in a non-volatile memory device, that includes receiving, by a processor, an indication of a power interruption event; disabling, based on the indication, decryption of encrypted data read from a volatile memory module; copying the encrypted data from the volatile memory module to cache; and copying the encrypted data from the cache to the non-volatile memory device.
1. A method for storing encrypted data in a non-volatile storage device, comprising:
receiving, by a processor, an indication of a power interruption event;
disabling, based on the indication, decryption of encrypted data read from a volatile memory module;
initiating copying of the encrypted data from the volatile memory module to the non-volatile storage device; and
after initiating the copying of the encrypted data from the volatile memory module to the non-volatile storage device:
receiving a second indication of a power recovery event;
disabling, based on the second indication, encryption of data written to the volatile memory module;
initiating copying the encrypted data from the non-volatile storage device to the volatile memory module.
2. The method of claim 1 , wherein disabling the decryption of encrypted data comprises:
modifying an address association table to indicate that the encrypted data on the volatile memory module is unencrypted.
3. The method of claim 1 , wherein initiating copying of the encrypted data from the non-volatile storage device to the volatile memory module comprises:
copying the encrypted data from the volatile memory module to cache; and
copying the encrypted data from the cache to the non-volatile storage device.
4. The method of claim 1 , wherein initiating copying of the encrypted data from the non-volatile storage device to the volatile memory module comprises:
sending a copy command to the non-volatile storage device, wherein the copy command instructs the non-volatile storage device to copy the encrypted data from the volatile memory module to the non-volatile storage device.
5. The method of claim 1 , wherein disabling the encryption of data comprises:
modifying an address association table to indicate that the encrypted data is to not be encrypted.
6. The method of claim 1 , further comprising:
after initiating copying the encrypted data from the non-volatile storage device to the volatile memory module:
modifying an address association table to indicate that the encrypted data on the volatile memory module is encrypted.
7. The method of claim 1 , wherein the power interruption event is a loss of continuous external power.
8. The method of claim 7 , wherein after receiving the indication of power interruption event, a capacitor provides power to the processor and the volatile memory module.
9. The method of claim 1 , wherein initiating copying of the encrypted data from the volatile memory module to the non-volatile storage device comprises:
copying the encrypted data from the volatile memory module to cache; and
copying the encrypted data from the cache to the non-volatile storage device.
10. The method of claim 1 , wherein initiating copying of the encrypted data from the volatile memory module to the non-volatile storage device comprises:
sending a copy command to the non-volatile storage device, wherein the copy command instructs the non-volatile storage device to copy the encrypted data from the volatile memory module to the non-volatile storage device.
11. A non-transitory computer readable medium comprising instructions which, when executed by a computer processor, enables the computer processor to perform a method for storing encrypted data in a non-volatile storage device, comprising:
receiving, by a processor, an indication of a power interruption event;
disabling, based on the indication, decryption of encrypted data read from a volatile memory module;
initiating copying of the encrypted data from the volatile memory module to the non-volatile storage device; and
after initiating the copying of the encrypted data from the volatile memory module to the non-volatile storage device:
receiving a second indication of a power recovery event;
disabling, based on the second indication, encryption of data written to the volatile memory module; and
initiating copying the encrypted data from the non-volatile storage device to the volatile memory module.
12. The non-transitory computer readable medium of claim 11 , wherein disabling the decryption of encrypted data comprises:
modifying an address association table to indicate that the encrypted data on the volatile memory module is unencrypted.
13. The non-transitory computer readable medium of claim 11 , wherein initiating copying of the encrypted data from the non-volatile storage device to the volatile memory module comprises:
copying the encrypted data from the volatile memory module to cache; and
copying the encrypted data from the cache to the non-volatile storage device.
14. The non-transitory computer readable medium of claim 11 , wherein initiating copying of the encrypted data from the non-volatile storage device to the volatile memory module comprises:
sending a copy command to the non-volatile storage device, wherein the copy command instructs the non-volatile storage device to copy the encrypted data from the volatile memory module to the non-volatile storage device.
15. The non-transitory computer readable medium of claim 11 , further comprising:
after initiating copying the encrypted data from the non-volatile storage device to the volatile memory module:
modifying an address association table to indicate that the encrypted data on the volatile memory module is encrypted.
16. The non-transitory computer readable medium of claim 11 , wherein initiating copying of the encrypted data from the volatile memory module to the non-volatile storage device comprises:
copying the encrypted data from the volatile memory module to cache; and
copying the encrypted data from the cache to the non-volatile storage device.
17. The non-transitory computer readable medium of claim 11 , wherein initiating copying of the encrypted data from the volatile memory module to the non-volatile storage device comprises:
sending a copy command to the non-volatile storage device, wherein the copy command instructs the non-volatile storage device to copy the encrypted data from the volatile memory module to the non-volatile storage device.
18. A node, comprising:
a non-volatile storage device;
a volatile memory module;
a processor, wherein the processor is configured to perform a method for storing encrypted data in the non-volatile storage device, comprising:
receiving, by the processor, an indication of a power interruption event;
disabling, based on the indication, decryption of encrypted data read from the volatile memory module;
initiating copying of the encrypted data from the volatile memory module to the non-volatile storage device; and
after initiating the copying of the encrypted data from the volatile memory module to the non-volatile storage device:
receiving a second indication of a power recovery event;
disabling, based on the second indication, encryption of data written to the volatile memory module; and
initiating copying the encrypted data from the non-volatile storage device to the volatile memory module.